Asphalt spreader



Dern 11, 192s, 1,695,202

' A. T. NEWELL ASPHALT SPREADER Filed May 26, 1928 2 sheets-sheet 1 0-.a Alfred TNewell Dec. 1l, 1928.`

A. T. NEWELL ASPHALT SPREADER 2 Sheets-Sheet 2 Filed 'May 26, 1928 0 0.0 o 0T 0.o

e l o He n .411 11./ Ef o o .m4 M 7 @5 Wmme M110 au. msvd, 0J- O1. Y auras, 4 M O0 www o WM gwvwntoz AAlfred TNewell Patented Dec. 11, 1928.

" UNITED STATES PATENT OFFICE.

ASPHALT sPaEADEa, I

Application led May 26,

My invention relates to a machine for use in road building for uniformlydistributing, spreading, striking off and smoothing paving material suchas for example, hot bitumen or the like; andit is an object of theinvention to provide a machine of this character which will eliminate alarge amount of manual labor and by means of which such material may bemore accuratelyand easily distributed in order to reduce if noteliminate the high and low places or waves and unevenness whichordinarily occur in the building of a roadway; all as will behereinafter more particularly described and claimed. I

Referring to the accompanying drawings which are made a part hereof andon which similar reference characters indicate similar part-s,

Figure l1 is a top plan view of my invention,

Y Figure 2, a side elevation, l Figure 3, a longitudinal section,

. Figure 4, a fragmentary rear elevation,

and y Figure 5, a fragmentary longitudinal detail section. In thedrawings, reference character 10 indicat-es a pair of steel railsdisposed one at each side of the roadway and upon which are supportedtrucks formed of outer and inner channel members 11- and 12 disposed inopposed relation above each rail 10. The channel members are connectedby spacersw13 and a longitudinal side plate 14 is secured to the innerchannel member. Brackets 15 are connected to the upper edge of the sideplates and to the outer channel members for maintainingthe parts in theproper position. Between the channel members 1l and 12 at the 4o frontand rear of the trucks are mounted a pair of wheels 16 that roll uponthe rails 10.

At the front end of the machine an upright channel member 17 is securedto the side plate 14` at each side of the machine, such uprights beingconnected by a'scraper blade carrying channel member 18 by means ofbolts 19 which slide in slots 2O in the uprights 17. A scraper blade 21is secured to the lower ortion of the channel member 18 and pro- 5ojects below the same, such blade being shaped to conform to the crown ofthe roadway. Means is rovided for adjusting the height of the bla ecarrying member 18 which com- 1928. Serial No. 280,932.

prises an adjusting screw 22 disposed at each end of the channel`member,su ch' adjusting screw being supported by a bracket 23 carriedby the side plate 14 anda pair of lock nuts 24 are employed for lockingthe parts in proper adjusted position.

Rearwardly of the blade 2 1 is mounted a second cross or channel member25supported by upright angle members 26 corresponding to the upright 17and such cross member 1s adjustable by means of a screw .27 carried bybracket 28. The angle member 25 is disposed slightly above the plane ofthe front cross member in order to permit suicient material to passthereunder to form the roadway, said member being also provided withdepending forwardly extending rake teeth 29 which are adapted to combthe material deposited.

A plurality of spaced parallel rods 30 are supported between the anglemembers 18 and l25 said rods having their forward ends bent downwardlyand resting in apertures in the lower flange 31 of the channel member 18with the rear ends of such rods bent slightly and. extending through thevertical midportion of the .channel member 25 and held therein by meansof a nut 32. Pipes 33 of relatively larger size are placed on the rods30 to form a grate for reception of the road material which prevents thesame from being dumped directly on the foundation of the roadway andtherefore eliminate packing of suchmaterial which is a decidedlyobjectionable feature in applying asphalt or the like. The pipes 33rotate to discharge material. An apron 18 has its front edge supporteddirectly on the blade vcarrying member 18 and extends rearwardlyVdownward and terminates over the forward portion of the grat-e bars 33,said apron being adapted to receive a portion of the material as it isdumped onto said grate bars.

In order to assist in raking the material deposited and to 'pulverizeand evenly distribute the same, I provide a pair of aligned shafts 34and 35 adjacent and in parallel relation to the cross member 25, suchshafts having their inner ends journalled in a U- shaped bracket 36 andhaving their outer ends extending through the side plates 14. The shafts34 and 35 are provided with o positely extending projections or teeth 37which l42 and have their inner are located between adjacent pipes' 33.The aligned shafts 34 and 35 are provide-d on their outer ends `withypinions 38 which are driven by an intermediate pinion 39 :from adriving gear 40 on the axle 41 of one of the truck wheels.Y The alignedshafts in this manner are rotated independently, however, if desired, asingle shaft may be used and the driving mechanism at one side of themachine omitted.

Rearwardly of the member 25 is mounted a second similar member 42provided with rake teeth 43 which extend downwardly and forwardly andsuch member is supported by brackets 28 in a manner similar to thepreviously described cross members 18 and 25. Rearwardly of the rack 42are mounted a pair of oppositely arranged diagonal rakes 44 and 45 whichform substantially the letter X. These diagonal rakes are supported attheir outer ends similar to the ra es 25 and ortions connected andadjustably supported y means of a rear strut or cross brace 46. Behindthe rear set of rakes is mounted a curved ironing-tool vwhich extendsacross the inner roadway and is adapted to smooth oif and seal thematerial ready for the roller which is to follow.

The short sections of sheet metal have their forward portions curved atan angle of about 45 deerees and are attached to a support 48 whicth issupported at each end in a manner similar to the rakes 25 and 42 and isconnected by means of straps 49 to the strut 46.

In theI operation of my machine, road surfacing material such as hotbitumen asphalt or a mixture of concrete or other material is dischargedfrom trucks or the like onto the apron 18 and grate bars 33 while themachine is idle whereupon the machine is pulled along and the materialis combed or harrowed to a smooth surface of a thickness correspondingto the difference between the depth of the cutting edge of the scraperblade 24 and the l adjustable rake 25. The ironing and edging tool atthe rear of the machine on account of pressure caused by the weight ofmachine forms the same to the proper radius and seals the same, therebyeliminating the necessity of hand tamping, The material is uniformlyspread to a uniform density and desired comf pactness and is ready forrolling.

Material used from a central mixing plant and deposited in the spreaderby means of trucks, laid, spread and rolled will eliminate all visiblewaves of the character which can be so plainly seen when riding 4in anautomobile at night over asphalt roads not constructed by my machine.

It will be obvious to those skilled in the art that various changes maybe made in my device without departing from the spirit of my invention,and I, therefore, do not limit myself to what is shown in the drawingsand described inthe specification, but only as set forth'in the appendedclaims.

Having thus fully described my said invention, what 'I claim as new anddesire to secure by -Letters Patent, is: j

1. A road building machine comprising an adjustable scraper forpreparing the roadway for the reception of surfacing material, a crossmember supported in spaced relation to said scraper, a plurality of rodshaving their ends supported by said scraper and cross member, and pipesloosely mounted on said rods, substantially as set forth.

2. A road building machine comprising a scraper forpreparing the roadwayfor the reception of surfacing material, means for vertically adjustingeach end of the scraper, a cross member supported in fixed spacedrelation to the scraper, pipes mounted on said rods and forming gratebars, and a plurality of rakes mounted rearwardly of said pipes,substantially as set forth.

3. rA road building machine 'comprising av scraper for preparing theroadway for the reception of surfacing material, means for verticallyadjusting each end of the scraper, a cross member supported in fixedspaced relation to the scraper, pipes mounted on said rods and forminggrate bars, a plurality of rakes mounted rearwardly of said pipes andmeans for ironing out the material after it is operated upon by saidrakes, substantially as set forth.

4. A road building machine comprising a scraper for preparing theroadway for the reception of surfacing material, means for verticallyadjusting each end of the scraper, a cross member supported in fixedspaced relation to the scraper, pipes mounted on said rods and forminggrate bars, a plurality of rakes mounted rearwardly of said pipes, and arotatable rake having teeth disposed in alternation between said pipes,substantially as set forth. s

5. A road building machine comprising a subgradev scraper bladeadjustably supported across thel front end of the machine, a pair ofspaced cross members adjustably supported llO adjacent the scraper,relatively short rods y connecting the spaced cross members, relativelylarge pipes rotatably mounted onsaid rods in vertically inclinedposition, an apron projecting rearwardly over the pipes and forming'ashed for receiving road material for preventing the same from beingdumped directly on the roadway against the scraper blade, substantially,as set forth. y

6. A road building machine comprising a subgrade scraper bladeadjustably supported across the front end of the machine, a pair ofspaced cross membersy adjustably sup- -V ported adjacent the scraper,relatively short rods connecting the spaced cross members,

relatively large pipes rotatably mounted on rear end of the machine,substantially as set said rods in vertically inclined position, anforth. apron projecting rearwardly over the pipes In witness whereof, I'have hereunto set my 10 and forming a shed for receiving road mahand atBirmingham, Alabama, this 22d day 5 terial for preventing the same frombeing of May, A. D., 1928.

dumped directly on the roadway against the 4 scraper blade, and asmoothing iron at the ALFRED T. NEWELL.

